Oregon, United States – After studying how birds move and breathe, a team of scientists says that they do not fall but not of the dinosaurs would have evolved independently.For decades, we know that the femur in the bird is nearly frozen, preventing these animals from running easily.But researchers at the University of Oregon have discovered that the bones also maintains their lungs, allowing them to breathe in the air. All other animals have walked on Earth, including humans, elephants, lizards and dinosaurs theropods (family, which includes the T-Rex) have a femur free of any movement.The discovery could force paleontologists to reconsider their belief that modern birds are direct descendants of old carnivorous dinosaurs.
“It’s surprising that we did not understand a basic element of the biology of birds,” says researcher John Ruben American.Characteristics such as feathers, wings, and unique way that the birds to move to would be developed separately.Dinosaurs and birds have all flourished during the Cretaceous, there are 145 to 65 million years.
The Archeopterix, long considered the oldest bird, lived there 150 million years when dinosaurs appeared earlier, there are 200 million years.According to Professor Ruben, birds and dinosaurs share a common ancestor, Karamuru vorax, who walked the earth there are 250 million years.”It seems now clear that birds have evolved their own side and not descended directly from dinosaurs theropods” concluded John Reuben.